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Finding the Fourth Proportional to 656,337.90, 985,284.45 and 651,672.30

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Solution

The fourth proportional to 656,337.90, 985,284.45 and 651,672.30 is: 978,280.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,337.90 : 985,284.45 = 651,672.30 : x
  2. Step 2: Convert to fraction form
    656,337.90/985,284.45 = 651,672.30/x
  3. Step 3: Cross multiply
    656,337.90x = 985,284.45 × 651,672.30
  4. Step 4: Simplify right side
    656,337.90x = 642,082,583,685.74
  5. Step 5: Solve for x
    x = 642,082,583,685.74/656,337.90
  6. Step 6: Final answer
    x = 978,280.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.